Marshalltown 1/8-in to 1-1/2-in Diamond Non-arbored Milling cone

Great tool to have!

This is a great tool to have. I got it to open up a few holes in some tile that needed to be bigger, but I didn’t have a larger bit for. First, it has really aggressive grit, so it will remove a lot of material fast. Second, if you are not careful, it can angle and break the tile instantly. Take your time and plan out what you want to do before you turn on the angle grinder.

Solid performance.

The 3/8" Diamond Non-arbor Drilling Bit delivers solid performance for professional and DIY tasks. Its diamond coating provides impressive durability, allowing fast penetration through tough materials like concrete and brick with reduced wear. The non-arbor design simplifies use on grinders, which can be a big time-saver on multiple-site jobs. Users will appreciate minimal chatter and steadier cuts, thanks to the bit’s robust construction and balanced weight distribution. One standout feature i...

Amazing Affordable Milling Bit

The Marshalltown ⅜ Diamond Milling Bit, it is a great tool for precision milling with the angle grinder. When using it with tile or with wood trim, I can always trust that with the Marshalltown Diamond Milling Bit, cuts will significantly faster and explicitly detaled more than that of other bits I've used in the past. Its durability to hold up for various projects out performs my expectations and the affordability of this milling bit has made me return to get other bits made by Marshalltown.

3/8 inch Marshalltown Diamond Milling Bit

I just received my 3/8 inch Marshalltown Diamond Milling Bit. This bit is designed to round, shape or enlarge existing holes in porcelain, ceramic tile. I have used it to grind a half of a hole in the side of a tile then grind a half of a hole in another tile and place the two tiles around 1/4 inch pipe. It works for me. This bit can also be used to widen or shape granite. It can be used dry or wet! I just screw it on my grinder and all set.

Great bit

Awesome tool! was genuinely impressed with this drill bit. It cuts clean, precise holes with zero wobble, and the durability is outstanding. Even after multiple uses on tough materials, the tip stayed sharp and didn’t overheat. It grips securely in the drill, making the whole job feel smoother and faster. Whether you’re working on home projects or professional tasks, this drill bit is reliable, sturdy, and definitely worth the money. Highly recommend!